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Effective Pseudonoise Sequence and Decoding Function for Imperceptibility and Robustness Enhancement in Time-Spread Echo-Based Audio Watermarking

Effective Pseudonoise Sequence and Decoding Function for Imperceptibility and Robustness Enhancement in Time-Spread Echo-Based Audio Watermarking,10.1

Effective Pseudonoise Sequence and Decoding Function for Imperceptibility and Robustness Enhancement in Time-Spread Echo-Based Audio Watermarking   (Citations: 1)
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This paper proposes an effective pseudonoise (PN) se- quence and the corresponding decoding function for time-spread echo-based audiowatermarking. Differentfrom the traditionalPN sequence used in time-spread echo hiding, the proposed PN se- quence has two features. Firstly, the echo kernel resulting from the new PN sequence has frequency characteristics with smaller magnitudes in perceptually significant region. This leads to higher perceptual quality. Secondly, the correlation function of the new PN sequence has three times more large peaks than that of the ex- isting PN sequence. Based on this feature, we propose a new de- coding function to improve the robustness of time-spread echo- based audio watermarking. The effectiveness of the proposed PN sequence and decoding function is illustrated by theoretical anal- ysis, simulation examples, and listening test.
Journal: IEEE Transactions on Multimedia - TMM , vol. 13, no. 1, pp. 2-13, 2011
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